Which of the following glands /structure do not participate in excretion in periplaneta americana ?

Options

A. Uricose gland
B. Malpighian tubules
C. Fat body
D. phallic gland

Answer

To solve the question regarding which gland or structure does not participate in excretion in Periplaneta americana (the American cockroach), we will analyze each option provided:

1. **Uricose Gland**:
- The uricose gland is involved in the storage of excreta. It plays a role in the excretion process by storing waste products before they are eliminated from the body.
- **Conclusion**: This gland participates in excretion.

2. **Malpighian Tubules**:
- Malpighian tubules are specialized structures in insects that are responsible for the excretion of nitrogenous waste. They filter waste from the hemolymph (insect blood) and excrete it as uric acid.
- **Conclusion**: This structure participates in excretion.

3. **Fat Body**:
- The fat body serves primarily as a storage site for nutrients, including glycogen, and plays a role in metabolism. While it can indirectly assist in excretion by storing energy, it does not directly participate in the excretion of waste products.
- **Conclusion**: This structure does not primarily participate in excretion.

4. **Phallic Gland**:
- The phallic gland is involved in the reproductive process, specifically in the production of spermatozoa. It does not have a role in excretion.
- **Conclusion**: This gland does not participate in excretion.

Based on the analysis of the options, the correct answer to the question is:

**Answer**: Phallic gland